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Security Information and Event Management

5 minutes 5 Questions

Security Information and Event Management (SIEM) refers to a set of solutions that collect, analyze, and manage security data from various sources to provide real-time monitoring, correlation, and actionable insights for network security. SIEM systems can detect unusual activities and potential thr…

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CompTIA Network+ - Security Information and Event Management Example Questions

Test your knowledge of Security Information and Event Management

Question 1

A security administrator notices that a server in the Data Center is sending a large amount of data to a single IP address outside of the organization's usual traffic patterns. How can the SIEM help identify the cause?

Correct Answer: By correlating logs from different sources

The best answer is 'By correlating logs from different sources'. A Security Information and Event Management (SIEM) system collects and aggregates log data generated throughout an organization’s technology infrastructure. It can identify the source of the traffic, as well as what type of information has been sent. In this case, it can correlate logs from the server with other logs to identify the cause of the unusual trafficThe other answers are not as precise:'By generating a detailed firewall report': While a detailed firewall report can give more insights about what traffic is being let through, SIEM gives a holistic view of events across the organization and can identify the cause'By resetting the server': This doesn't necessarily identify the cause of unusual traffic, but may disrupt any ongoing data transmission, and there's a risk that any information about the attack will be lost'By blocking all traffic to the unusual IP': This might stop the current flow of data, but it doesn't necessarily identify the cause of this unusual traffic.

Question 2

A recently acquired company's network is running legacy technologies that do not generate standardized log data. How can a SIEM system help to overcome this challenge?

Correct Answer: Log normalization

Log normalization allows SIEM systems to understand and process log events from various sources, even non-standard ones. Other options do not specifically address the issue of non-standard log data.

Question 3

Your organization has experienced a significant increase in the volume of false positive security alerts. As a network security analyst, which SIEM feature would help you improve the accuracy of these alerts?

Correct Answer: Tuning and optimization

The feature of 'Tuning and optimization' in a SIEM (Security Information and Event Management) system is the best answer. The purpose of tuning and optimization is to improve the accuracy of security alerts by fine-tuning the parameters and rules that a SIEM uses to identify potential security threats. This process may involve adjusting certain thresholds or fine-tuning detection rules to make sure they are not too sensitive (which could lead to false positives). On the other hand, 'Additional security sensors', 'Decreasing log retention', and 'Adding log sources' are not the best options. Adding more security sensors or log sources may increase the volume of data to analyze but not necessarily reduce the number of false positives. Decreasing log retention could potentially miss out some long-term or low-and-slow threats. Therefore, these do not directly help in improving the accuracy of alerts.

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